Aqueous polyester recovery by-product treatment buffer
By employing a spiral heating mechanism and comprehensive insulation design in the polyester recycling by-product processing unit, the temperature gradient problem in traditional buffer kettles has been solved, achieving uniform heating of materials and efficient utilization of thermal energy, thus ensuring the consistency and quality of the materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN SAILON TECH CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional buffer reactors suffer from temperature gradient problems in the processing of polyester recycling by-products, leading to material inconsistency and difficulty in ensuring quality, as well as significant heat loss, which affects the efficiency of thermal energy utilization.
It adopts a spiral heating mechanism and a comprehensive insulation design, including a first heating section, a second heating section, a third heating section and a heating plate, combined with hollow copper tube circulating hot steam heating to ensure that all parts of the buffer tank are heated evenly, and heat loss is reduced by stainless steel inner and outer layers and rock wool or silicate insulation layers.
It achieves uniform heating of materials in the buffer tank, avoids temperature gradients, improves material consistency and quality, reduces heat loss, improves thermal energy utilization efficiency, and ensures that a constant temperature is reached and maintained in a shorter time.
Smart Images
Figure CN224376569U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyester recycling equipment, and in particular to a buffer device for processing polyester recycling by-products. Background Technology
[0002] PET (Polyester Petroleum) is an important plastic with wide applications in textiles, packaging, and other fields.
[0003] PET has a long natural degradation cycle, which easily causes environmental pollution. To address this issue, various methods exist for recycling PET polyester materials, such as chemical, biological, and physical methods. Among these, the most common chemical method is alcoholysis, which degrades the recycled PET polyester into raw materials for PET production, such as polyethylene terephthalate, which can then be reused in the production of PET polyester. However, existing alcoholysis methods generate a certain amount of waste that cannot be further recycled, commonly known as byproducts. Depending on the raw materials used in the alcoholysis method, byproducts are classified into alcohol byproducts and ester byproducts. If these byproducts are not further treated, their accumulation can still cause environmental pollution or safety problems.
[0004] Thermolysis can effectively process polyester recycling byproducts and achieve resource recovery and reuse. Before the byproducts undergo pyrolysis in a continuous pyrolyzer, they need to be buffered. Traditional buffer reactors are prone to temperature gradient problems, making it difficult to ensure material consistency and quality; therefore, improvements are urgently needed. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the aforementioned problems in the prior art, this utility model provides a buffer device for processing polyester recycling by-products.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:
[0009] A buffer device for processing polyester recycling by-products includes a buffer tank and a heating mechanism;
[0010] The buffer container includes a container body, a container lid, a container bottom, and a discharge port. The container bottom is located at the bottom of the container body, the container lid covers the top of the container body, and the discharge port is located at the bottom of the container bottom.
[0011] The heating mechanism includes a first heating section, a second heating section, a third heating section, and a heating plate;
[0012] The first heating element is spiral-shaped and installed inside the discharge port;
[0013] The second heating element is connected to the first heating element and is distributed in a spiral shape inside the bottom of the tank;
[0014] The third heating section is connected to the second heating section and is distributed in a spiral shape inside the tank body;
[0015] The heating plate is installed at the bottom of the can lid.
[0016] Preferably, the bottom of the tank has a funnel-shaped structure that is wider at the top and narrower at the bottom, and the second heating element is spirally distributed on the inner wall of the bottom of the tank.
[0017] Preferably, the first heating section, the second heating section, and the third heating section are connected to each other and are all hollow copper tubes, with hot steam circulating inside the hollow copper tubes.
[0018] Preferably, the tank body, tank lid, tank bottom, and discharge port are all made of heat-insulating material.
[0019] Preferably, the insulation material includes a stainless steel inner layer, a stainless steel outer layer, and an insulation layer, wherein the insulation layer is disposed between the stainless steel inner layer and the stainless steel outer layer, and the insulation layer is made of rock wool or silicate.
[0020] Preferably, the bottom of the can lid is provided with an outer ring body, the heating plate is disposed in the outer ring body, the top opening of the can body is recessed with a mounting groove corresponding to the outer ring body, a sealing ring is installed at the bottom of the inner wall of the mounting groove, and the outer ring body installed in the mounting groove is fixed by bolts.
[0021] Preferably, the outer wall of the buffer tank is provided with a ladder and a level gauge.
[0022] Preferably, the bottom of the outer wall of the buffer tank is provided with multiple support legs, and the bottom of the support legs is equipped with casters.
[0023] (III) Beneficial Effects
[0024] The beneficial effects of this utility model are as follows:
[0025] The first, second, and third heating sections of the heating mechanism enable the tank body, bottom, and discharge port of the buffer tank to be heated. The heating plate of the heating mechanism also enables the bottom of the tank lid to be heated. This application can ensure that the material inside the tank is heated evenly in all parts, avoiding the temperature gradient problem that may occur in traditional heating methods, ensuring the consistency and quality of the material. Furthermore, the comprehensive insulation design of the buffer tank reduces heat loss, enabling the heating tank to reach the required temperature in a shorter time and maintain a constant temperature, thereby improving the efficiency of heat energy utilization. Attached Figure Description
[0026] Figure 1 A schematic diagram of a buffer device for processing polyester recycling by-products;
[0027] Figure 2 A schematic front view of a buffer device for processing polyester recycling by-products;
[0028] Figure 3 This is a schematic diagram of the heating mechanism;
[0029] Figure 4 This is a structural diagram of the thermal insulation material;
[0030] Figure 5 This is a schematic diagram of the can lid structure;
[0031] Figure 6 A schematic diagram of the structure for attaching the can body to the can lid.
[0032] Explanation of reference numerals in the attached figures:
[0033] 1. Tank body; 111. Mounting groove; 112. Bolt; 113. Sealing ring; 12. Tank lid; 121. Ring body; 13. Tank bottom; 14. Discharge port;
[0034] 2. Heating mechanism;
[0035] 21. First heating section; 22. Second heating section; 23. Third heating section; 24. Heating plate;
[0036] 3. Climbing ladders;
[0037] 4. Support legs;
[0038] 5. Thermal insulation material; 51. Stainless steel inner layer; 52. Stainless steel outer layer; 53. Thermal insulation layer. Detailed Implementation
[0039] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0040] Please refer to Figures 1 to 6 This utility model provides a buffer device for processing polyester recycling by-products, including a buffer tank and a heating mechanism 2;
[0041] The buffer container includes a container body 1, a container lid 12, a container bottom 13, and a discharge port 14. The container bottom 13 is located at the bottom of the container body 1, the container lid 12 covers the top of the container body 1, and the discharge port 14 is located at the bottom of the container bottom 13.
[0042] The heating mechanism 2 includes a first heating part 21, a second heating part 22, a third heating part 23, and a heating plate 24;
[0043] The first heating part 21 is spiral-shaped and is installed inside the discharge port 14;
[0044] The second heating element 22 is connected to the first heating element 21 and is distributed in a spiral shape inside the bottom of the tank 13;
[0045] The third heating section 23 is connected to the second heating section 22 and is distributed in a spiral shape inside the tank body 1;
[0046] The heating plate 24 is installed at the bottom of the can lid 12;
[0047] The tank body 1, tank lid 12, tank bottom 13, and discharge port 14 are all made of heat-insulating material 5;
[0048] In use, the first heating part 21, the second heating part 22, and the third heating part 23 of the heating mechanism 2 enable the tank body 1, the tank bottom 13, and the discharge port 14 of the buffer tank to have heating functions. The heating plate 24 of the heating mechanism 2 enables the bottom of the tank cover 12 to also have heating functions. This application can ensure that the material inside the tank is heated evenly in all parts, avoiding the temperature gradient problem that may occur in traditional heating methods, ensuring the consistency and quality of the material. In addition, the comprehensive heat preservation design of the buffer tank reduces heat loss, enabling the heating tank to reach the required temperature in a shorter time and maintain a constant temperature, thereby improving the utilization efficiency of thermal energy.
[0049] It should be noted that the heating plate 24 is an electric heating plate or a steam heating plate.
[0050] In this embodiment, the bottom of the can 13 has a funnel-shaped structure that is larger at the top and smaller at the bottom. The second heating part 22 is spirally distributed on the inner wall of the bottom of the can 13. The funnel-shaped structure of the bottom of the can 13 allows the second heating part 22 to be better connected with the first heating part 21 and the third heating part 23.
[0051] In this embodiment, the first heating unit 21, the second heating unit 22, and the third heating unit 23 are connected to each other and are all hollow copper tubes. Hot steam circulates inside the hollow copper tubes. The first heating unit 21, the second heating unit 22, and the third heating unit 23 use steam heating to heat the inside of the buffer tank.
[0052] In this embodiment, the insulation material 5 includes a stainless steel inner layer 51, a stainless steel outer layer 52, and an insulation layer 53. The insulation layer 53 is disposed between the stainless steel inner layer 51 and the stainless steel outer layer 52. The insulation layer 53 is made of rock wool or silicate. The comprehensive insulation design of the buffer tank reduces heat loss, enabling the heating tank to reach the required temperature in a shorter time and maintain a constant temperature, thereby improving the efficiency of thermal energy utilization.
[0053] In this embodiment, an outer ring 121 is provided at the bottom of the can lid 12, and the heating plate 24 is disposed inside the outer ring 121. The top opening of the can body 1 is recessed with a mounting groove 111 corresponding to the outer ring 121. A sealing ring 113 is installed at the bottom of the inner wall of the mounting groove 111. The outer ring 121 installed in the mounting groove 111 is fixed by bolts 112. In use, the can lid 12 can be sealed and installed by the cooperation of the outer ring 121, the sealing ring 113 and the mounting groove 111.
[0054] In this embodiment, a ladder 3 and a level gauge are provided on the outer wall of the buffer tank.
[0055] In this embodiment, the bottom of the outer wall of the buffer tank is provided with multiple support legs 4, and the bottom of the support legs 4 is equipped with casters.
[0056] The working principle of this utility model is as follows:
[0057] The first heating part 21, the second heating part 22, and the third heating part 23 of the heating mechanism 2 enable the tank body 1, the tank bottom 13, and the discharge port 14 of the buffer tank to have heating functions. The heating plate 24 of the heating mechanism 2 enables the bottom of the tank cover 12 to also have heating functions. This application can ensure that the material in the tank can be heated evenly in all parts, avoiding the temperature gradient problem that may occur in traditional heating methods, ensuring the consistency and quality of the material. In addition, the comprehensive heat preservation design of the buffer tank reduces heat loss, enabling the heating tank to reach the required temperature in a shorter time and maintain a constant temperature, thereby improving the utilization efficiency of thermal energy.
[0058] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.
[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A buffer device for processing polyester recycling by-products, characterized in that, Includes a buffer tank and a heating mechanism; The buffer container includes a container body, a container lid, a container bottom, and a discharge port. The container bottom is located at the bottom of the container body, the container lid covers the top of the container body, and the discharge port is located at the bottom of the container bottom. The heating mechanism includes a first heating section, a second heating section, a third heating section, and a heating plate; The first heating element is spiral-shaped and installed inside the discharge port; The second heating element is connected to the first heating element and is distributed in a spiral shape inside the bottom of the tank; The third heating section is connected to the second heating section and is distributed in a spiral shape inside the tank body; The heating plate is installed at the bottom of the can lid.
2. The buffer device for processing polyester recycling by-products according to claim 1, characterized in that, The bottom of the tank has a funnel-shaped structure that is wider at the top and narrower at the bottom, and the second heating element is spirally distributed on the inner wall of the bottom of the tank.
3. The buffer device for processing polyester recycling by-products according to claim 1, characterized in that, The first heating section, the second heating section, and the third heating section are connected to each other and are all hollow copper tubes, with hot steam circulating inside the hollow copper tubes.
4. The buffer device for processing polyester recycling by-products according to claim 1, characterized in that, The tank body, lid, bottom, and discharge port are all made of heat-insulating material.
5. A buffer device for processing polyester recycling by-products according to claim 4, characterized in that, The insulation material includes a stainless steel inner layer, a stainless steel outer layer, and an insulation layer. The insulation layer is disposed between the stainless steel inner layer and the stainless steel outer layer, and the insulation layer is made of rock wool or silicate.
6. The buffer device for processing polyester recycling by-products according to claim 1, characterized in that, The bottom of the can lid is provided with an outer ring body, the heating plate is disposed in the outer ring body, the top opening of the can body is recessed with a mounting groove corresponding to the outer ring body, a sealing ring is installed at the bottom of the inner wall of the mounting groove, and the outer ring body installed in the mounting groove is fixed by bolts.
7. A buffer device for processing polyester recycling by-products according to claim 1, characterized in that, The outer wall of the buffer tank is equipped with a ladder and a level gauge.
8. A buffer device for processing polyester recycling by-products according to claim 1, characterized in that, The buffer tank has multiple support legs at the bottom of its outer wall, and omnidirectional wheels are installed at the bottom of the support legs.